SPI Supplies

Pollucite CsSi2AlO6

Locality: Bernic Lake, Manitoba, Canada

Element%Oxide%
H0.20H2O 1.79
Li0.20Li2O 0.43
O36.70
Na1.30 Na2O 1.75
Al8.50 Al2O316.06
Si22.00 SiO247.07
K0.10 K2O 0.12
Rb0.70 Rb2O 0.77
Cs30.00 Cs2O31.81
Sum99.7 Sum99.8
200 µ m
This is a reflected light micrograph of polished, carbon coated pollucite crystals. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. Pollucite is the only mineral which contains significant amounts of the rare element cesium. It even has a small amount of rubidium, which is not found as a principal component in any mineral. The Bernic Lake pegmatite is one of the world's major producers of rare elements like cesium (Cs), niobium (Nb) and tantalum (Ta).
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Cautionary Note
The compositional and other data shown here are intended to convey typical values for this item and do not neccessarily correspond in detail to standard mounts supplied in the past or to be supplied in the future. Items are changed from time to time as stock is exhausted or alternate choices are preferred. These data should, however, give someone contemplating the purchase of an SPI standard a fair indication of what they may expect to receive. Records are kept of all mounts sold so that, should you lose your documentation at some time in the future, we will be happy to replace it at no charge.


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Sunday October 12, 2008
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